METHOD OF DE-MAGNETIZING LARGE-SIZED MACHINES CONTAINING ROTOR AND STATOR Russian patent published in 1995 - IPC

FIELD: electric mechanical engineering. SUBSTANCE: magnetomotive force for demagnetizing plants is applied in such a manner, that units of the assembly, its shaft and case have to be parts of closed magnetic circuit. Magnetomotive force generated by two or more pairs of coils is applied in opposition or aiding. At aiding connection longitudinal demagnetizing flux is generated which is closed at the shaft through the case, and demagnetizing flux which is closed at shaft through the case. Demagnetization is carried out at longitudinal direction. At opposing connection, demagnetizing fluxes are generated which cause Demagnetization as at longitudinal, and at radial direction, moreover, radial one prevails. EFFECT: improved efficiency. 3 dwg